// Copyright © 2019 The Things Network Foundation, The Things Industries B.V.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

class Token {
  constructor(token) {
    /**
     * Make sure it is possible to instantiate an instance
     * of the class only once.
     */
    if (!!Token.instance) {
      return Token.instance
    }

    if (this.token) {
      return Token.instance
    }

    Token.instance = this
    this.token = token

    return this
  }

  get() {
    return this.token
  }
}

export default Token
